There are people who in LJ write texts on the topic of programming. There are people who do the same on Habré. It is possible to collect everything into one RSS feed, but such a thing is individual, it is not at all the same as the collective feed on the main page of Habr. The solution could be “content hosting”, when different services remain different, but access the same common database. In other words, the service can use not only its own, but also other people's content. For example, in the Habr ribbon, thematic articles from LJ would be used (similarly, users' habraposts would fall into the live frend tapes).
Of course, for services it is a double-edged sword. Now separate, “own” content for each service means competition between services in the gradual formation of a unique, own community of users. Whoever has a bigger and better community is winning (from a widespread point of view, the quality is quite a “left” parameter, rather, it’s about the number and solvency of the audience). At the same time, the service should greatly strain on promotion, and the growth process all the same cannot be very fast (except when there is some uncovered audience with a high need for communication. But even then only initial growth will be fast). In the proposed version of the general content, there will be fewer problems with the growth of the audience and the mass of content, but the competition moves to a narrower area, where the one who can offer the most flexible and high-quality tape formation, taking into account the needs of each specific user, wins.
But for users it will be anyway to win - firstly, an increase in the volume of the target audience for writing authors, and secondly, an increase in the relevance of the information received to readers.
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PS No one will say what the castle means before the name of the post?
UPD December 9, 2010 It seems that the startup
Factual fully implements the idea of hosting content. Here is a small
note about it.